Hi Bill,
Recently my rear governor was starting to act up....less responsive than the front; not always able to pull takeoff rpm, losing rpm in the climb, gaining rpm in the descent. Time for an overhaul.
I have the McCauley unit with prop synchrophaser. I just sent mine to H&S Propeller in Michigan since they're right across the border from me. We're hoping for 5 day turnaround. I'm anticipating $900 for the o/h.
If you look at McCauley application guide the Cessna 337 starts on page B-244
Guide here:
https://mccauley.txtav.com/-/media/m...files/mag.ashx
There are various changeups on the part numbers, but Quality Aircraft Accessories seems to carry the McCauley governor for $1395 exchange + a $500 core charge. They will overhaul a McCauley starting at $695
Here's the page:
https://www.qaa.com/products/aircraf...auley-governor
To answer your question I cycle my props one at a time...I like to watch RPM, oil pressure and manifold pressure while I'm cycling the props.